Abstract: Described is a motivational fitness process using motion sensing apparatus to correlate exercise performance with entertainment audio volume for the purpose of rewarding exercise performance goals and penalizing poor exercise performance. The user must exercise in a chosen target training range to maintain a desired entertainment audio volume. Motion sensors in a mobile or stationary device or worn by user provide continuous movement data to a processor unit. The processor receives and compares the user's movement data to a user-specified target range and periodically sends control commands (or not) to raise or lower audio volume output of an entertainment device. If the user's exercise pace drops below a targeted performance range, audio volume output of their entertainment device gradually decreases unless the user reacquires their performance target range at which time volume is restored. Desired volume is maintained so long as target zone performance is maintained.